Nor278 Sound Source

Nor278 Reference Sound Source

Nor278 Reference sound source for sound power measurements.

The rugged and compact design makes it well suited for both laboratory and field use.

The design ensures a stable and uniform sound power output with unique long-term stability.

Specifications

• Nor278: Reference sound source according to ISO6926:2016 for extended frequency range 50 Hz- 20 kHz
• Nor278/US: Reference sound source according to ISO6926:2016 for standard frequency range 100 Hz- 10 kHz
• Power Supply: 220-240 Volt/50 Hz / 110-120 Volt/60 Hz
• Power consumption: <750 W (typical 650 watt) (50 Hz) / <900 W (typical 800 watt) (60 Hz)
• Fuses: 10A – slow blow (220 V) / 20A – slow blow (110 V)
• Sound power output each 1/3-octave frequency band: >75 dB re 1 pW (50 Hz) / >77 dB re 1 pW (60 Hz) in each 1/3-octave bands in the range 100 Hz to 10 kHz.
• A-weighted sound power output: 94 dB (typically) (50 Hz) / 97 dB (60 Hz)
• Weight: 18 kg (50 Hz) / 24,5 kg (60 Hz)
• Height exclusive handle: 396 mm
• Height inclusive handle: 464 mm
• Diameter: 283 mm
• Temperature: -25° to 50°C. Above 35°C intermittent use only.
• Humidity: Up to 90 %, non-condensing.

Standards

• ISO 3741
• ISO 3743-1
• ISO 3747
• ISO 6926
• ISO 7779